TABLE 1

The authors' proposal for the use of overnight tests to diagnose sleep disordered breathing in patients with chronic pulmonary disease

Patients with	Overnight oximetry	Overnight standalone capnography	Overnight polygraphy	Overnight polysomnography with capnography	Overnight polysomnography with capnography and MSLT
COPD	No indication	No indication	OSA screening	• OSA screening^# • If other sleep disorders are suspected^¶	No indication
Asthma	No indication	No indication	OSA screening	• OSA screening^# • If other sleep disorders are suspected^¶	No indication
Obesity	No indication	No indication	OSA screening	• OSA screening^# • If other sleep disorders are suspected^¶	Hypersomnia screening in rare “hypothalamic” obesity (e.g. Prader–Willi syndrome)
Amyotrophic lateral sclerosis	Regular (4 times per year) screening for hypoventilation onset	If available, (4 times per year) screening for hypoventilation onset	OSA screening	• OSA screening^# • If other sleep disorders are suspected^¶	No indication
Other neuromuscular diseases	No indication	Screening (once per year) for hypoventilation onset	OSA screening	• OSA screening^# • If other sleep disorders are suspected^¶	Hypersomnia screening in myotrophic dystonia
Interstitial lung disease	No indication	No indication	OSA screening	• OSA screening^# • If other sleep disorders are suspected^¶	No indication

OSA: obstructive sleep apnoea; MSLT: multiple sleep latency tests. ^#: if polysomnography is largely available in the local centre or if overnight polygraphy did not confirm the clinical suspicion of OSA; ^¶: periodic limb movements, insomnia.